const axios = require('axios')
const { Service } = require('ee-core');
const Log = require('ee-core/log');
const Conf = require('ee-core/config');
const { reject } = require('lodash');

axios.defaults.headers['Content-Type'] = 'application/json;charset=utf-8'

const cfg = Conf.getValue('platformApi');

// 创建axios实例
const service = axios.create({
  // axios中请求配置有baseURL选项，表示请求URL公共部分
  baseURL: cfg.url,
  // 超时
  timeout: 10000
})


// request拦截器
service.interceptors.request.use(config => {
  // get请求映射params参数
  if (config.method === 'get' && config.params) {
    let url = config.url + '?';
    for (const propName of Object.keys(config.params)) {
      const value = config.params[propName];
      var part = encodeURIComponent(propName) + "=";
      if (value !== null && typeof(value) !== "undefined") {
        if (typeof value === 'object') {
          for (const key of Object.keys(value)) {
            if (value[key] !== null && typeof (value[key]) !== 'undefined') {
              let params = propName + '[' + key + ']';
              let subPart = encodeURIComponent(params) + '=';
              url += subPart + encodeURIComponent(value[key]) + '&';
            }
          }
        } else {
          url += part + encodeURIComponent(value) + "&";
        }
      }
    }
    url = url.slice(0, -1);
    config.params = {};
    config.url = url;
  }
  return config
}, error => {
    console.log(error)
    return new Error(error)
})


// 响应拦截器
service.interceptors.response.use(res => {
  // 未设置状态码则默认成功状态
  const code = res.data.code || 200;
	Log.info("接口返回"+JSON.stringify(res.data));
  // 获取错误信息
  const msg =  res.data.msg || res.data.desc
	return new Promise(function(resolve, reject) {
		if (code !== 200) {
		  return reject(res.data);
		} else {
		  return resolve(res.data);
		}
	})
  },
  error => {
    console.log('err' + error)
    let { message } = error;
    if (message == "Network Error") {
      message = "后端接口连接异常";
    }
    else if (message.includes("timeout")) {
      message = "系统接口请求超时";
    }
    else if (message.includes("Request failed with status code")) {
      message = "系统接口" + message.substr(message.length - 3) + "异常";
    }
    return new Promise(function(resolve, reject) {
      return reject(message);
    })
  }
)


/**
 * request
 * @class
 */
class RequestService extends Service {

  constructor(ctx) {
    super(ctx);
  }
  
  request(config = {}) {
	return service(config)
  }
  
}

RequestService.toString = () => '[class RequestService]';
module.exports = RequestService;  
  
// module.exports = service
